Aaahhh, stupid me... so the button should actually be called "add one general ceiling light" or somtehing like that.
I always thought, that it turns on and off any lighting in the room.
Ok, shame on me... I was trying for hours to get rid off that one light... lol... my god...

Okok, I got it now ...

Thanks Hans for trying to help.
I think the problem is not clear though:

Create a room and make the ceiling visible.
Dont add any lights to the room, just a plain room without walls, just floor and check "ceiling visible".
Then you take a picture from inside of that room with "add lights" checked ...

Well that removes every light.
But I want my light there, just not the "extra" light.

I am using 4.3.

I dont want to uncheck "lights" because I WANT to see lights.
But I want to see MY LIGHTS and not a light that I didnt put there.

You see what I mean?

Hi all!
I have a problem: Whenever I create a room, there is always ONE light on the ceiling that I never put there.
How can I get rid of that?

To see what I mean, just create a room with ceiling visible, then take a snapshop "with lighting" and you will see ONE light on the ceiling that no one ...